What best describes the cell membrane?
A. It is a single layer of lipids
B. It is an impene...
Biology, 15.09.2021 22:10 northpolea
What best describes the cell membrane?
A. It is a single layer of lipids
B. It is an impenetrable barrier
C. It is strong, rigid, and durable
D. It is a lipid bi-layer
Answers: 2
Biology, 22.06.2019 10:30
How do the evolutionary chart and the video support the claim that all living things are made up of cells?
Answers: 3
Biology, 22.06.2019 11:30
Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.
Answers: 1
Biology, 22.06.2019 18:30
Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.
Answers: 1
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